초록 ▼

A sprinkler valve suitable for flows from about one (1) to two (2) gallons per hour to thirty (30) to forty (40) gallons per minute. A double diaphragm utilizes a principle of differential areas to create force for any non-zero pressure through the valve. This feature, in conjunction with momentary

A sprinkler valve suitable for flows from about one (1) to two (2) gallons per hour to thirty (30) to forty (40) gallons per minute. A double diaphragm utilizes a principle of differential areas to create force for any non-zero pressure through the valve. This feature, in conjunction with momentary fluid flow in the solenoid circuit, is responsible for complete regulation of the flow characteristics of the valve. The requirement for large shut-off springs and flow control adjustment screws has been eliminated. The flow may be determined by the size of the valve. The need for solenoid springs has been eliminated. In one embodiment two (2) separate diaphragms utilize a principle of differential areas to create force for any non-zero pressure through the valve. This feature, in conjunction with momentary fluid flow in the solenoid circuit, is responsible for complete control of the flow characteristics of the valve. The requirement for large shut-off assist springs and solenoid return springs has been eliminated.

대표청구항 ▼

A diaphragm assembly for use in a sprinkler valve with an inlet port, an outlet port, a flapper valve, a fluid flow blocking means in a fluid flow blocking means chamber, a solenoid connected to a solenoid plunger which solenoid plunger may contact the fluid flow blocking means, a gasket, a passagew

A diaphragm assembly for use in a sprinkler valve with an inlet port, an outlet port, a flapper valve, a fluid flow blocking means in a fluid flow blocking means chamber, a solenoid connected to a solenoid plunger which solenoid plunger may contact the fluid flow blocking means, a gasket, a passageway connecting the outlet port to the fluid flow blocking means chamber, a passageway connecting the inlet port to the fluid flow blocking means chamber, and a passageway connecting a top surface of an upper diaphragm of the diaphragm assembly to the fluid flow blocking means chamber which diaphragm assembly comprises a support ring in which are concentrically mounted a spool, a stop on top of the spool, the upper diaphragm beneath the stop and around the spool, and a lower diaphragm beneath the upper diaphragm and around the spool, and in which the surface area of the upper diaphragm is greater than the surface area of the lower diaphragm and in which sprinkler valve the upper diaphragm is part of the gasket and in which sprinkler valve the flapper valve is located in such a manner that fluid flow from the outlet port of the sprinkler valve in the direction of the fluid flow blocking means chamber closes the flapper valve and stops fluid from flowing from the outlet port to the passageway from the outlet port to the fluid flow blocking means chamber and which flapper valve is located in such a manner that fluid pressure at the outlet port is not applied to the top of the upper diaphragm and which sprinkler valve is controlled by application of fluid pressure at the inlet port of the valve to the diaphragms.